March 30, 2017 17:57 Updated Follow To contact INDOT Central Office Customer Service, call 1-866-849-1368 or email email@example.com. Contact information and other frequently used phone numbers for INDOT districts can be found at Frequently Used Phone Numbers Related articles Why is the Illiana needed? What is being done to inform property owners about the Illiana project and their legal rights? How can a state agency retrieve records stored at the State Records Center? What are some common suspension and reinstatement forms? Is the project funded... how will it be funded?